论文标题
进一步的Milliarcsecond分辨率结果是Devashtal的Lunar Sacultations Cool Giants和二进制恒星
Further milliarcsecond resolution results on cool giants and binary stars from lunar occultations at Devashtal
论文作者
论文摘要
我们报告了在2017年在Devasthal启动的计划中观察到的26个月球掩盖事件。除了使用1.3-m望远镜的习惯观察结果，我们在这里还报告了近IIR的3.6-m DOT望远镜在TIRCAM2摄像头上进行的首次尝试。该结果由两个晚期型巨人的首次角直径组成，测量了众所周知的AGB脉动可变sw〜vir，并且在测量了八个小型分离二进制物中，首次检测到其中一个（HR〜1860）。我们还测量了更宽的二进制文件〜94431和55〜tau（两次）。发现其余的来源未解决，上限很小至1毫米。我们计划进一步开发TiRCAM2仪器的高速功能，以便在我们的计划中包括更多近红外，高度灭绝的来源。
We report on 26 lunar occultation events observed in the context of a program started at Devasthal in 2017. In addition to the customary observations with the 1.3-m telescope, we report here also the first attempts performed with the TIRCAM2 camera at the 3.6-m DOT telescope in the near-IR. The results consist in the first-time angular diameters for two late-type giants, in a measurement of the well-known AGB pulsating variable SW~Vir, and in the measurement of eight small separation binaries one of which is detected for the first time (HR~1860). We also measured the wider binaries SAO~94431 and 55~Tau (twice). The remaining sources were found to be unresolved with upper limits as small as 1~milliarcsecond. We plan to develop further the high-speed capability of the TIRCAM2 instrument, so as to include in our program also more near-infrared, highly extincted sources.
